Heater



FIG. 1 is a perspective view of a heater showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a fragmentary, exploded perspective view thereof; and,

FIG. 9 is a fragmentary sectional view taken along dot-dashed line IX-IX of FIG. 5 .

The evenly-dashed broken lines depict portions of a heater in which the design is embodied that form no part of the claimed design.

The dot-dash broken lines in FIGS. 8 and 9 depict boundary lines for section cuts only and form no part of the claimed design. 

CLAIM The ornamental design for a heater, as shown and described. 